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Common pepperweed

Lepidium densiflorum

Also called Prairie peppergrass, Densely-flowered pepperwort, Miner's Pepperwort, Prairie Pepperweed, Prairie Pepperwort, Small Flowered Peppergrass, Common Peppergrass

Common pepperweed
Photo: Jim Pisarowicz, Public domain

Common pepperweed is a small annual or biennial weed in the cabbage family, native across much of North America and common in disturbed ground. It grows best in full sun on fertile or sandy, well-drained soil.

Family
Brassicaceae (Cabbage family)
Grows as
Annual
Light
Full sun
Water
Water sparingly; it tolerates dry conditions well once established.
Soil
Fertile loam, rocky or sandy soil; well drained.
Temperature
Hardy in temperate climates; tolerates cold winters as a self-seeding annual.
How easy
Easy
Safety
Not known to be toxic
Native range
Subarctic America to N. Mexico
Climate
temperate

About

Lepidium densiflorum is a species of flowering plant in the mustard family known by the common names common pepperweed, prairie peppergrass, elongate peppergrass, hairy-fruited peppergrass, and large-fruited peppergrass.

It is a common and widespread plant in North America, where it grows in many habitats across Canada and the United States.

Where it grows

Lepidium densiflorum prefers sunny, moderate dry conditions, and fertile loamy soil, but it also can adapt to rocky or sandy soil easily. It is distributed throughout Ontario, Canada and is a very common weed growing in the cultivated land, the farms, the gardens, the sandy land, the roadsides and the waste areas.

Uses

The seeds of Lepidium densiflorum can be used to biologically control the mosquito larvae. Additionally, the 4-HBITC and SNB extracted from Lepidium densiflorum seeds have capacity to anti the oxidicability of DPPH and -OH. Moreover, the benzylic glucosinolates system was found in Lepidium densiflorum, which is related to both plant–pathogen interactions and human health.

Other Lepidium plants

Field pepperweed · Maca · Mountain pepperweed · Shining pepperweed · Cook's scurvy grass · Clasping pepperweed · Featherleaf pepperweed · Garden cress · Virginia pepperweed · Pepperweed

Text excerpted from the Wikipedia article Lepidium densiflorum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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